CN114424970A - Cardiac muscle ablation assembly - Google Patents
Cardiac muscle ablation assembly Download PDFInfo
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- CN114424970A CN114424970A CN202210066449.2A CN202210066449A CN114424970A CN 114424970 A CN114424970 A CN 114424970A CN 202210066449 A CN202210066449 A CN 202210066449A CN 114424970 A CN114424970 A CN 114424970A
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- 238000002679 ablation Methods 0.000 title claims abstract description 48
- 210000004165 myocardium Anatomy 0.000 title claims abstract description 44
- 239000000523 sample Substances 0.000 claims abstract description 72
- 230000002107 myocardial effect Effects 0.000 claims abstract description 41
- 239000002184 metal Substances 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 claims abstract description 6
- 238000005553 drilling Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000155 melt Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- 230000000916 dilatatory effect Effects 0.000 claims 5
- 210000003205 muscle Anatomy 0.000 claims 1
- 238000007674 radiofrequency ablation Methods 0.000 abstract description 2
- 238000002844 melting Methods 0.000 description 10
- 230000008018 melting Effects 0.000 description 10
- 238000000926 separation method Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 210000005077 saccule Anatomy 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 206010003119 arrhythmia Diseases 0.000 description 2
- 230000006793 arrhythmia Effects 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 2
- 238000007918 intramuscular administration Methods 0.000 description 2
- 230000003211 malignant effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000000596 ventricular septum Anatomy 0.000 description 2
- 206010003671 Atrioventricular Block Diseases 0.000 description 1
- 208000003959 Ventricular Outflow Obstruction Diseases 0.000 description 1
- 210000000709 aorta Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 238000002695 general anesthesia Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 206010020871 hypertrophic cardiomyopathy Diseases 0.000 description 1
- 230000001969 hypertrophic effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 208000010125 myocardial infarction Diseases 0.000 description 1
- 208000003663 ventricular fibrillation Diseases 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1477—Needle-like probes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
- A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00345—Vascular system
- A61B2018/00351—Heart
- A61B2018/00392—Transmyocardial revascularisation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00577—Ablation
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Plasma & Fusion (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Otolaryngology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Cardiology (AREA)
- Surgical Instruments (AREA)
Abstract
The present invention provides a myocardial ablation assembly comprising: the puncture probe is characterized in that a balloon with a hollowed surface is formed by a plurality of interwoven metal wires and is in a football shape, two tips of the puncture probe are front ends and rear ends and are positioned on the front side of a puncture catheter, the front ends of the puncture probe are used for stretching into a myocardial gap and drilling the myocardium around the puncture probe to form a myocardial hole, a rotating mechanism is arranged in an inner cavity of the puncture catheter and is close to the front ends of the puncture catheter and is used for driving the puncture probe to rotate so that the puncture probe drills the myocardial hole, a first electrode patch is fixedly connected to the front end of a connecting pipe, an electrode wire of the first electrode patch penetrates through the connecting pipe to be electrically connected with an external power supply, and the first electrode patch which is not shielded by the metal wires of the puncture probe is used for conducting ablation on the myocardial hole in the myocardial hole after the puncture probe drills the myocardial hole, so that the problems of difficult control of an ablation range and limited curative effect in the existing radio frequency ablation are solved.
Description
Technical Field
The invention belongs to the field of medical equipment, and particularly relates to a myocardial ablation assembly.
Background
The traditional treatment method of hypertrophic cardiomyopathy is general anesthesia thoracotomy or minimally invasive treatment, wherein minimally invasive treatment is that a microcatheter is placed on a large interventricular artery branch, then absolute alcohol is injected to artificially produce interventricular myocardial infarction so as to contact with a hypertrophic ventricular septum to cause left ventricular outflow obstruction, and the minimally invasive method has the problems that no proper interventricular artery can be used, the operation risk is high, and malignant arrhythmia such as three-degree atrioventricular conduction block and ventricular fibrillation is easy to occur. Later, improved radio frequency energy ablation is matched with minimally invasive treatment, the radio frequency energy ablation is carried out by acting on the surface of the left ventricular septum through a radio frequency expanding catheter, the ablation range is difficult to control, the curative effect is limited, and malignant arrhythmia is easy to occur.
Disclosure of Invention
The invention aims to provide a myocardial ablation assembly, and aims to solve the technical problems that the ablation range is difficult to control and the curative effect is limited in the existing radio frequency ablation.
In order to solve the technical problems, the invention adopts the following technical scheme: a myocardial ablation assembly, comprising: a puncture catheter, the front end of which is used for entering the myocardial gap,
the puncture probe is a football-shaped saccule with a hollow surface and composed of a plurality of interwoven metal wires, the saccule is positioned at the front side of the puncture catheter, the two tips of the puncture probe are the front end and the rear end, the puncture probe is positioned at the front side of the puncture catheter, the front end of the puncture probe is used for stretching into the myocardial gap and drilling the myocardium around the puncture probe to form a myocardial hole,
a rotating mechanism which is arranged in the inner cavity of the puncture catheter and is close to the front end and is used for driving the puncture probe to rotate so as to lead the puncture probe to drill holes on the myocardium,
the connecting pipe is positioned in the puncture catheter and is coaxially arranged with the puncture catheter, the front end of the connecting pipe penetrates through the front end of the puncture catheter and extends into the inner cavity of the puncture probe, the connecting pipe is fixedly connected with the inner wall of the front end of the puncture probe, the front end of the connecting pipe is fixedly connected with a first electrode patch, an electrode wire of the first electrode patch penetrates through the connecting pipe and is electrically connected with an external power supply, the first electrode patch which is not shielded by a metal wire of the puncture probe is used for melting cardiac muscle in the cardiac muscle hole after the puncture probe drills out the cardiac muscle hole, and the first electrode patch which is shielded by the metal wire of the puncture probe heats the metal wire by utilizing the heat of the first electrode patch so as to melt the cardiac muscle.
Furthermore, the expanding catheter is positioned outside the puncture catheter and is coaxially arranged with the puncture catheter, the expanding catheter can move along the puncture catheter in a centripetal intramuscular mode, one end close to the puncture probe is the front end, the end far away from the puncture probe is the rear end, the front end of the expanding catheter is fixedly connected with a second electrode patch, an electrode wire of the second electrode patch is electrically connected with an external power supply through an inner cavity of the expanding catheter, and the second electrode patch is used for melting the periphery of the ablation part of the puncture probe after the expanding catheter extends into the myocardium.
Further, the tip of puncture pipe is followed its trend and is seted up first swivelling chute of circular shape from the tip, the tip of puncture pipe is seted up the circular shape second swivelling chute along the direction of perpendicular its trend, first swivelling chute is linked together with the second swivelling chute, rotary mechanism includes: the rotating piece consists of a circular plate, a supporting column and a supporting plate which are integrally connected from front to back in sequence, the circular plate covers the front end of the puncture guide tube, the supporting column is of a hollow columnar structure, the supporting column and the circular plate are coaxially arranged, the supporting plate is annular, the inner ring of the supporting plate is connected with the rear end of the supporting column, the supporting plate is positioned in the second rotating groove, the supporting column is positioned in the first rotating groove, the front side of the circular plate is fixedly connected with the puncture probe,
further, carry the ring, be located puncture catheter, and the spiral sets up on the outer wall of connecting pipe, its front end and the rear side fixed connection of plectane, its rear end is connected with external torque motor electricity, torque motor is used for driving and carries the ring rotatory, and then drives the rotating member rotatory for the rotating member drives the puncture probe rotatory, and then drills to cardiac muscle.
Furthermore, the position on the pipe wall of connecting pipe, be close to its front end has seted up the inlet tube along its trend the position on the pipe wall of connecting pipe, be close to its front end has seted up the ring pipe around its pipe wall a week, the one end and the inlet tube intercommunication of ring pipe, the other end of ring pipe is opened towards the myocardium, the ring pipe is used for the cooling water to get into it through the inlet tube to in the same place gets into between the myocardium, cools down to the myocardium after puncture probe melts.
Further, be equipped with the screw thread separation blade in the annular tube, along the pipeline trend, the screw thread separation blade is used for increaseing the resistance of rivers for the velocity of flow reduces, increases the effect of cooling.
Further, a plurality of through holes are arranged on the wall of the puncture catheter close to the rear end of the puncture catheter and around the wall of the puncture catheter for a circle, and the myocardial ablation assembly further comprises: the pull rope, the one end of pull rope stretches into to the rear end inner chamber of puncture pipe from the external world, and its other end passes the through-hole and extends to the front end of puncture pipe along puncture pipe outer wall to with the front end outer wall fixed connection of puncture pipe, the pull rope is used for pulling puncture pipe and produces the bending, the bend angle of adjustment puncture pipe, thereby the adjustment puncture pipe gets into the entry angle in the myocardium.
The invention has the beneficial effects that: the invention meets the two conditions of one-point or multi-point melting of the melting area in the myocardial ablation operation by the coaxial arrangement of the puncture catheter and the expansion catheter; the rapid entrance of the ablation electrode is realized by utilizing the rotatable puncture probe; the mutual cooperation of the hollow elliptical saccule and the connecting pipe realizes the selectable change of the diameter of the access passage, so that the expanding catheter can quickly reach the ablation position.
Drawings
FIG. 1 is a schematic illustration of the use of a myocardial ablation assembly of the present invention;
FIG. 2 is a schematic diagram of the overall construction of a myocardial ablation assembly of the present invention;
FIG. 3 is a schematic view of the internal structure of a puncture probe of a myocardial ablation assembly according to the present invention;
FIG. 4 is a schematic view of a puncture probe in a myocardial ablation assembly in accordance with the present invention;
FIG. 5 is a schematic structural view of a connector tube in a myocardial ablation assembly in accordance with the present invention;
fig. 6 is a schematic view of the structure of the wall of the catheter in a myocardial ablation assembly according to the present invention.
Wherein, 1, myocardial gap; 2. puncturing the catheter; 3. an expanding catheter; 4. a puncture probe; 5. a connecting pipe; 6. a delivery ring; 401. a spring; 7. a water inlet pipe; 8. an annular tube; 9. a threaded retaining piece; 10. a metal induction wire; 11. a first electrode patch; 12. a second electrode patch; 13. a rotation mechanism; 1301. a support pillar; 1302. a circular plate; 1303. a support plate; 14. a rope body; 15. a thermal insulation gasket.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The present invention provides a myocardial ablation assembly, as shown in fig. 1-4, comprising: a myocardial ablation assembly, comprising: a puncture catheter 2, a puncture probe 4, a rotating mechanism 13, a connecting pipe 5 and an expanding catheter 3;
the front end of the puncture catheter 2 can enter the myocardial gap 1, the puncture probe 4 is positioned at the front side of the puncture catheter 2, a balloon with a hollow surface is formed by a plurality of metal wires which are interwoven with one another, the balloon is football-shaped, two tips of the balloon are the front end and the rear end, the front end of the balloon is used for extending into the myocardial gap 1, and the myocardium around the balloon is drilled to form a myocardial hole;
the rotating mechanism 13 is arranged in the inner cavity of the puncture catheter 2 and close to the front end and is used for driving the puncture probe 4 to rotate, so that the puncture probe 4 drills a hole in the myocardium;
connecting pipe 5 is located puncture catheter 2, and with puncture catheter 2 coaxial arrangement, its front end passes puncture catheter 2's front end and stretches into 4 inner chambers of puncture probe, and with puncture probe 4's front end inner wall fixed connection, its front end fixedly connected with first electrode paster 11, the electrode line of first electrode paster 11 passes connecting pipe 5 and is connected with external power electricity, first electrode paster 11 that is not sheltered from by puncture probe 4's wire is used for after puncture probe 4 drills out the cardiac muscle hole, melt the cardiac muscle in the cardiac muscle hole, first electrode paster 11 that is sheltered from by puncture probe 4's wire utilizes its heat to heat the wire and then melts cardiac muscle.
A temperature-insulating gasket 15 is laid on the metal wire of the puncture probe 4 along the boundary point of the unshielded part and the shielded part of the first electrode patch 11; the uncontrollable ablation range is prevented from being caused by the fact that the electrode patch is heated and then thermally conducted to the shielding part of the metal wire of the puncture probe 4.
The coaxial arrangement of the puncture catheter 2 and the expansion catheter 3 meets two conditions of one-point melting or multi-point melting of the melting area in the myocardial ablation operation; the rotatable puncture probe 4 is utilized to realize the rapid entrance of the ablation electrode; the mutual cooperation of the hollow elliptical balloon and the connecting pipe 5 realizes the selectable change of the diameter of the access passage, so that the expanding catheter 3 can quickly reach the ablation position.
The coaxial arrangement of the puncture catheter 2 and the expansion catheter 3 meets two conditions of one-point melting or multi-point melting of the melting area in the myocardial ablation operation; the rotatable puncture probe 4 is utilized to realize the rapid entrance of the ablation electrode; the mutual cooperation of the hollow elliptical balloon and the connecting pipe 5 realizes the selectable change of the diameter of the access passage, so that the expanding catheter 3 can quickly reach the ablation position.
As shown in fig. 3, the rotating mechanism 13 of the present invention is a rotating mechanism 13, wherein a first circular rotating groove is formed in the front end of the puncture catheter 2 from the end along the direction of the puncture catheter, a second circular rotating groove is formed in the front end of the puncture catheter 2 along the direction perpendicular to the direction of the puncture catheter, the first rotating groove is communicated with the second rotating groove, and the rotating mechanism 13 includes: the rotating piece consists of a circular plate 1302, a supporting column 1301 and a supporting plate 1303 which are integrally connected from front to back in sequence, the circular plate 1302 covers the front end of the puncture catheter 2, the supporting column 1301 is of a hollow columnar structure, the supporting column 1301 and the circular plate 1302 are coaxially arranged, the supporting plate 1303 is annular, the inner ring of the supporting plate is connected with the rear end of the supporting column 1301, the supporting plate 1303 is located in a second rotating groove, the supporting column 1301 is located in a first rotating groove, and the front side of the circular plate 1302 is fixedly connected with the puncture probe 4.
The conveying ring 6 is located in the puncture catheter 2 and is spirally arranged on the outer wall of the connecting pipe 5, the front end of the conveying ring is fixedly connected with the rear side of the circular plate 1302, the rear end of the conveying ring is electrically connected with an external torque motor, the torque motor is used for driving the conveying ring 6 to rotate, and then the rotating piece is driven to rotate, so that the rotating piece drives the puncture probe 4 to rotate, and further the myocardium is drilled.
The invention also comprises that as shown in figure 5, a water inlet pipe 7 is arranged on the pipe wall of the connecting pipe 5 and at a position close to the front end of the connecting pipe along the trend, a ring pipe 8 is arranged on the pipe wall of the connecting pipe 5 and at a position close to the front end of the connecting pipe and around the pipe wall for a circle, one end of the ring pipe 8 is communicated with the water inlet pipe 7, the other end of the ring pipe 8 is open towards the myocardium, the ring pipe 8 is used for cooling water to enter the ring pipe through the water inlet pipe 7 and enter the myocardium from the beginning to the end, and the temperature of the myocardium ablated by the puncture probe 4 is reduced.
In the ring pipe 8, be equipped with screw thread separation blade 9 along the pipeline trend, screw thread separation blade 9 is used for increaseing the resistance of rivers for the velocity of flow reduces, increases the effect of cooling.
The invention also includes, as shown in fig. 6, a plurality of through holes are provided on the wall of the puncture catheter 2 near the rear end thereof and around the circumference of the wall, and the myocardial ablation assembly further includes: the pull rope, one end of the pull rope stretches into to the rear end inner chamber of the puncture catheter 2 from the outside, the other end of the pull rope passes through the through hole and extends to the front end of the puncture catheter 2 along the outer wall of the puncture catheter 2 and is fixedly connected with the outer wall surface of the front end of the puncture catheter 2, the pull rope is used for pulling the puncture catheter 2 to bend, the bending angle of the puncture catheter 2 is adjusted, and therefore the entering angle of the puncture catheter 2 into the myocardium is adjusted.
The invention also comprises that the outer surface of the puncture catheter 2 is uniformly provided with scale marks; the graduation mark can help the doctor to see the inter-myocardial entry depth of the puncture catheter 2 clearly under the image condition.
The invention also comprises, as shown in fig. 5, a metal induction wire 10 is further arranged in the connecting pipe 5, and the front end of the metal induction wire is close to the motor patch, which can help a doctor to judge the heating temperature of the electrode patch and determine the ablation temperature.
The invention is suitable for two conditions of one-point or multi-point ablation in the myocardial ablation operation; if the ablation area is a point, the puncture catheter 2 is placed along the surface of the cardiac muscle along the aorta, after a puncture probe 4 at the front end of the puncture catheter 2 reaches the surface of the cardiac muscle, the rotating assembly is started to enable the puncture probe 4 to drill under the cardiac muscle, after the puncture probe reaches a proper position, the rotating assembly is closed, an external power supply connected with an electrode wire in the connecting pipe 5 is started, and the electrode patch on the connecting pipe 5 performs ablation on the point of the cardiac muscle;
if the ablation area is multipoint, dragging the connecting pipe 5 to the rear end of the puncture catheter 2 after the puncture probe 4 at the front end of the puncture catheter 2 reaches the surface of the myocardium so that the maximum cross-sectional area of the puncture probe 4 is larger than or equal to the multipoint ablation area; thereby allowing the dilation catheter 3 to quickly reach the ablation site along the puncture catheter 2.
Claims (6)
1. A myocardial ablation assembly, comprising:
a puncture catheter (2) whose front end is used for entering the myocardial gap (1),
a puncture probe (4) which is a football-shaped sacculus with a hollow surface and composed of a plurality of metal wires interwoven with each other, the two tips of the puncture probe are a front end and a rear end and are positioned at the front side of the puncture catheter (2), the front end of the puncture probe is used for extending into the myocardial gap (1) and drilling the myocardium around the puncture probe to form a myocardial hole,
a rotating mechanism (13) which is arranged in the inner cavity of the puncture catheter (2) and is close to the front end and used for driving the puncture probe (4) to rotate to make the puncture probe (4) drill holes on the myocardium,
the connecting pipe (5) is located in the puncture catheter (2) and is coaxially arranged with the puncture catheter (2), the front end of the connecting pipe penetrates through the front end of the puncture catheter (2) to extend into an inner cavity of the puncture probe (4) and is fixedly connected with the inner wall of the front end of the puncture probe (4), the front end of the connecting pipe is fixedly connected with a first electrode patch (11), an electrode wire of the first electrode patch (11) penetrates through the connecting pipe (5) to be electrically connected with an external power supply, the first electrode patch (11) which is not shielded by a metal wire of the puncture probe (4) is used for ablating cardiac muscle in the cardiac muscle hole after the cardiac muscle hole is drilled out in the puncture probe (4), and the first electrode patch (11) which is shielded by the metal wire of the puncture probe (4) heats the metal wire by utilizing heat of the first electrode patch (11) to further ablate the cardiac muscle.
2. The myocardial ablation assembly of claim 1, further comprising:
the dilating catheter (3) is positioned outside the puncture catheter (2) and is coaxially arranged with the puncture catheter (2), the dilating catheter (3) can move in a centripetal muscle along the puncture catheter (2), one end close to the puncture probe (4) is a front end, one end far away from the puncture probe (4) is a rear end, the front end of the dilating catheter (3) is fixedly connected with a second electrode patch (12), an electrode wire of the second electrode patch (12) is electrically connected with an external power supply through an inner cavity of the dilating catheter (3), and the second electrode patch (12) is used for ablating the periphery of an ablated part of the puncture probe (4) along with the fact that the dilating catheter (3) extends into a cardiac muscle.
3. The myocardial ablation assembly according to claim 2, characterized in that the front end of the puncture catheter (2) is provided with a first circular rotation groove from the end along the trend thereof, the front end of the puncture catheter (2) is provided with a second circular rotation groove along the direction vertical to the trend thereof, the first rotation groove is communicated with the second rotation groove,
the rotating mechanism (13) includes:
the rotating piece sequentially consists of a circular plate (1302), a supporting column (1301) and a supporting plate (1303) which are integrally connected from front to back, the circular plate (1302) covers the front end of the puncture catheter (2), the supporting column (1301) is of a hollow columnar structure, the supporting column (1301) and the circular plate (1302) are coaxially arranged, the supporting plate (1303) is annular, the inner ring of the supporting plate is connected with the rear end of the supporting column (1301), the supporting plate (1303) is positioned in a second rotating groove, the supporting column (1301) is positioned in a first rotating groove, the front side of the circular plate (1302) is fixedly connected with the puncture probe (4),
the conveying ring (6) is positioned in the puncture catheter (2) and is spirally arranged on the outer wall of the connecting pipe (5), the front end of the conveying ring is fixedly connected with the rear side of the circular plate (1302), the rear end of the conveying ring is electrically connected with an external torque motor, the torque motor is used for driving the conveying ring (6) to rotate, and then the rotating piece is driven to rotate, so that the rotating piece drives the puncture probe (4) to rotate, and further the cardiac muscle is drilled.
4. The myocardial ablation assembly of claim 3,
the utility model discloses a puncture probe, including connecting pipe (5), inlet tube (7) have been seted up along its trend in the position on the pipe wall of connecting pipe (5), be close to its front end the position on the pipe wall of connecting pipe (5), seted up ring pipe (8) around its pipe wall a week near its front end, the one end and the inlet tube (7) intercommunication of ring pipe (8), the other end of ring pipe (8) opens towards the myocardium, ring pipe (8) are used for the cooling water to pass through inlet tube (7) and get into in it to the situation gets into between the myocardium, cools down to the myocardium after puncture probe (4) melts.
5. A myocardial ablation assembly according to claim 4, characterized in that, a thread baffle (9) is arranged in the annular tube (8) along the pipeline, and the thread baffle (9) is used for increasing the resistance of water flow, so that the flow speed is reduced and the cooling effect is increased.
6. The myocardial ablation assembly according to any one of claims 1-4, characterized in that a plurality of through holes are arranged on the wall of the puncture catheter (2) near the rear end thereof and around the circumference of the wall, and the myocardial ablation assembly further comprises: the pull rope, the one end of pull rope stretches into to the rear end inner chamber of puncture pipe (2) from the external world, and its other end passes the through-hole and extends to the front end of puncture pipe (2) along puncture pipe (2) outer wall to with the front end outer wall fixed connection of puncture pipe (2), the pull rope is used for pulling puncture pipe (2) to produce the bending, adjusts the bend angle of puncture pipe (2), thereby adjusts the entering angle that puncture pipe (2) got into in the myocardium.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210066449.2A CN114424970B (en) | 2022-01-20 | 2022-01-20 | Myocardial ablation assembly |
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|---|---|---|---|
| CN202210066449.2A CN114424970B (en) | 2022-01-20 | 2022-01-20 | Myocardial ablation assembly |
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| CN114424970A true CN114424970A (en) | 2022-05-03 |
| CN114424970B CN114424970B (en) | 2024-02-02 |
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| CN209091618U (en) * | 2018-07-25 | 2019-07-12 | 南京市第一医院 | A kind of ambipolar radio frequency ablation probe |
| CN112890949A (en) * | 2021-03-22 | 2021-06-04 | 杭州睿笛生物科技有限公司 | Thick myocardium ablation system |
| CN214017804U (en) * | 2020-11-30 | 2021-08-24 | 华中科技大学同济医学院附属同济医院 | Multi-target radio frequency ablation catheter for hypertrophic cardiomyopathy |
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2022
- 2022-01-20 CN CN202210066449.2A patent/CN114424970B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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